diff --git a/old_documentation/topics/aggregates.md b/documentation/topics/aggregates.md
similarity index 92%
rename from old_documentation/topics/aggregates.md
rename to documentation/topics/aggregates.md
index 1be6c275..cc4713a2 100644
--- a/old_documentation/topics/aggregates.md
+++ b/documentation/topics/aggregates.md
@@ -8,7 +8,9 @@ Example:
 
 ```elixir
 aggregates do
-  count :count_of_posts, :posts, filter: [published: true]
+  count :count_of_posts, :posts do
+    filter expr(published == true)
+  end
 end
 ```